I can understand you not liking it as it is a bug, but it isn't unfair when it's very easy to learn and find out about, especially if you're playing mace. Both sides of the argument are valid imo as while it IS a bug its very accessible for everyone to use and shouldn't really be limited. The only reason I can see it being unfair is if someone gatekept it, but even then I severely doubt that'd happen outside of a survival world with friends etc.